Study of the vi13/2-1 band in 189Pt

中国物理C, 2009, 33(9): 743-747.

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7, , ^8, , ^9, , ^10, , ^11, , ^12, , ^13,

1.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

2.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

3.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

4.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

5.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

6.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

7.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

8.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

9.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

10.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

11.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

12.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

13.Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

基金项目: 国家自然科学基金(10825522,10805058,10775158) 国家重点基础研究发展规划(973计划)(2007CB815001) 中国科学院"西部之光"资助项目(O803080XBB) 中国科学院资助项目 SRF for ROCS, SEM(O803090HGJ)

Study of the vi13/2-1 band in 189Pt

HUA Wei ^1, , ZHOU Xiao-Hong ^2, , ZHANG Yu-Hu ^3, , GUO Ying-Xiang ^4, , Oshima M. ^5, , Toh Y. ^6, , Koizumi M. ^7, , Osa A. ^8, , Hatsukawa Y. ^9, , QI Bin ^10, , ZHANG Shuang-Quan ^11, , MENG Jie ^12, , Sugawara M. ^13,

1.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

2.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

3.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China

4.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

5.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

6.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

7.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

8.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

9.Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

10.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

11.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

12.School of Physics, and State-Key Lab. Nucl. Phys. & Tech., Peking University, Beijing 100871, China

13.Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan

Keywords： high-spin state

High-spin levels of 189Pt have been studied with the in-beam γ-spectroscopy method via the 176Yb(18O,5n) reaction at the beam energies of 88 and 95 MeV. The previously known vi13/2-1 band has been confirmed, and its unfavored signature branch extended up to the 31/2+ state. Within the framework of the triaxial particle-rotor model, the vi13/2-1 band is suggested to be associated with the 11/2[615] configuration, and to have triaxial deformation.

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